IV percentile beats raw IV every time
25% IV on a low-IV name is rich; 25% on a high-IV name is cheap. Always look at percentile, never the absolute number — it's the only honest comparison.
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IV Percentile + Theta Decay
Two of the most-quoted, least-understood numbers on an option chain — IV percentile and theta decay. Plug in the basics and the calculator visualises both, so you can sense-check whether premium is actually worth selling.
IV is information until you put it next to its 52-week range. Decay is theory until you see it on a curve.
MindTrajour_IV+Theta
Read IV before you trade premium
Three reads to anchor every option order ticket.
Decay is non-linear
Square-root decay accelerates as expiration approaches. Half of today's premium is theoretically gone by the time DTE is one quarter of where you started. The curve makes the asymmetry obvious.
Selling high IV isn't an edge by itself
It's a starting point. Combine with a thesis, a strike picked off your POP target, and disciplined position sizing. IV percentile is necessary but not sufficient.
From IV regime to repeatable edge
IV regime should drive every premium-seller decision.
MindTrajour records IV percentile at trade entry, so you can filter your historical premium-seller P/L by regime. Edge in low-IV regimes is rare — make sure yours is real.
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Open toolFrequently asked questions
Everything you need to know before sizing your next trade.